MPEP § 214.03 — Office Acknowledgement of Priority Claims (Annotated Rules)

§214.03 Office Acknowledgement of Priority Claims

USPTO MPEP version: BlueIron's Update: 2025-12-31

This page consolidates and annotates all enforceable requirements under MPEP § 214.03, including statutory authority, regulatory rules, examiner guidance, and practice notes. It is provided as guidance, with links to the ground truth sources. This is information only, it is not legal advice.

Office Acknowledgement of Priority Claims

This section addresses Office Acknowledgement of Priority Claims. Primary authority: 35 U.S.C. 111(a), 35 U.S.C. 119(a), and 35 U.S.C. 255. Contains: 1 requirement, 1 guidance statement, and 3 permissions.

Key Rules

Topic

Amendments in National Stage

2 rules
StatutoryInformativeAlways
[mpep-214-03-80c7776963f5ede4dd5a5a89]
Requirement for Specific Application Filing
Note:
This form paragraph is required for original applications filed on or after November 29, 2000, and national stage applications under 35 U.S.C. 371.

1. Use this form paragraph only for original applications filed under 35 U.S.C. 111(a) on or after November 29, 2000 and for national stage applications under 35 U.S.C. 371. DO NOT use for design applications.

35 U.S.C.Amendments in National StageRequest Content and FormNational Stage Examination
StatutoryInformativeAlways
[mpep-214-03-bda553ad9c38ac9d13be5639]
Requirement for National Stage Filing
Note:
This rule requires the use of a specific form paragraph for original applications filed under 35 U.S.C. 111(a) on or after November 29, 2000 and for national stage applications under 35 U.S.C. 371.

1. Use this form paragraph only for original applications filed under 35 U.S.C. 111(a) on or after November 29, 2000 and for national stage applications under 35 U.S.C. 371. DO NOT use for design applications.

35 U.S.C.Amendments in National StageRequest Content and FormNational Stage Examination
Topic

Interviews in National Stage

2 rules
StatutoryInformativeAlways
[mpep-214-03-805fd353be46d6233f96b472]
Do Not Use for Design Applications
Note:
This rule prohibits the use of this form paragraph for design applications, specifying it is only applicable to original applications filed on or after November 29, 2000.

1. Use this form paragraph only for original applications filed under 35 U.S.C. 111(a) on or after November 29, 2000 and for national stage applications under 35 U.S.C. 371. DO NOT use for design applications.

35 U.S.C.Interviews in National StageAmendments in National StageRequest Content and Form
StatutoryInformativeAlways
[mpep-214-03-b789172676e65acf0425e991]
Do Not Use for Design Applications
Note:
This rule applies to original applications filed on or after November 29, 2000, and national stage applications under 35 U.S.C. 371, but not for design applications.

1. Use this form paragraph only for original applications filed under 35 U.S.C. 111(a) on or after November 29, 2000 and for national stage applications under 35 U.S.C. 371. DO NOT use for design applications.

35 U.S.C.Interviews in National StageAmendments in National StageRequest Content and Form
Topic

National Stage Entry Requirements

2 rules
StatutoryPermittedAlways
[mpep-214-03-861c3cbd50bc83c9bcc3fbef]
Foreign Priority Claim After Issue Fee But Before Grant
Note:
If a foreign priority claim is filed after the issue fee payment but before patent grant, it will be recorded but not reviewed, and the published patent will not include the priority claim.

When the claim for foreign priority or the certified copy of the foreign application is filed after the date of payment of the issue fee but prior to the date of grant of the patent, the foreign priority claim or certified copy will be placed in the file record but there may be no review of the papers and the patent when published will not include the priority claim. A certificate of correction under 35 U.S.C. 255 and 37 CFR 1.323 can be filed to have the foreign priority claim or certified copy considered after publication of the patent. In addition, for original applications filed under 35 U.S.C. 111(a) or international applications entering the national stage under 35 U.S.C. 371, a grantable petition to accept an unintentionally delayed claim for priority under 37 CFR 1.55 and the petition fee must be filed with the certificate of correction. See MPEP § 216.01.

Jump to MPEP Source · 37 CFR 1.323National Stage Entry RequirementsAccess to Application FilesOrdering Certified Copies
StatutoryRequiredAlways
[mpep-214-03-3e7028681c8fedcd294884fe]
Petition for Unintentionally Delayed Priority Claim Required
Note:
For original U.S. applications or international entries, a petition to accept an unintentionally delayed priority claim and the associated fee must be filed with a certificate of correction.

When the claim for foreign priority or the certified copy of the foreign application is filed after the date of payment of the issue fee but prior to the date of grant of the patent, the foreign priority claim or certified copy will be placed in the file record but there may be no review of the papers and the patent when published will not include the priority claim. A certificate of correction under 35 U.S.C. 255 and 37 CFR 1.323 can be filed to have the foreign priority claim or certified copy considered after publication of the patent. In addition, for original applications filed under 35 U.S.C. 111(a) or international applications entering the national stage under 35 U.S.C. 371, a grantable petition to accept an unintentionally delayed claim for priority under 37 CFR 1.55 and the petition fee must be filed with the certificate of correction. See MPEP § 216.01.

Jump to MPEP Source · 37 CFR 1.323National Stage Entry RequirementsAmendments in National StageUnintentional Delay Standard
Topic

Design Claim Form

1 rules
StatutoryPermittedAlways
[mpep-214-03-1573171601b4c1df3f408e52]
Late Foreign Priority Claim Without Petition
Note:
If a foreign priority claim in an original application is submitted after the deadline and without a petition, the examiner will notify the applicant that the claim will not be entered.

If the foreign priority claim in an original application filed under 35 U.S.C. 111(a) (other than a design application) is submitted after the time period set in 37 CFR 1.55 and without a petition under 37 CFR 1.55, the examiner may use form paragraph 2.21.01 to notify applicant that the foreign priority claim will not be entered.

Jump to MPEP Source · 37 CFR 1.55Design Claim FormDesign Foreign Priority (6 Months)Design Application Requirements
Topic

Access to Prosecution History

1 rules
StatutoryInformativeAlways
[mpep-214-03-e53fa52600a65cf08e9a6a56]
Priority Claim and Foreign Application Copy Must Be Timely
Note:
The examiner must enter a claim for foreign priority and the certified copy of the foreign application into the file history if received within the time period set forth in 37 CFR 1.55.

When the claim for foreign priority and the certified copy of the foreign application are received within the time period set forth in 37 CFR 1.55, if applicable, they are entered into the application file history. Assuming that the papers are timely and regular in form and that there are no irregularities in dates, the examiner in the next Office action will advise the applicant that the papers have been received on form PTOL-326 or by use of form paragraph 2.26.

Jump to MPEP Source · 37 CFR 1.55Access to Prosecution HistoryCopies and Certified DocumentsOrdering Certified Copies
Topic

Form Paragraph Usage

1 rules
StatutoryInformativeAlways
[mpep-214-03-f43098edb2eb284c8628d6c4]
Receipt of Priority Claim and Certified Copy
Note:
The examiner will advise the applicant that the priority claim and certified copy have been received if they are timely and in proper form.

When the claim for foreign priority and the certified copy of the foreign application are received within the time period set forth in 37 CFR 1.55, if applicable, they are entered into the application file history. Assuming that the papers are timely and regular in form and that there are no irregularities in dates, the examiner in the next Office action will advise the applicant that the papers have been received on form PTOL-326 or by use of form paragraph 2.26.

Jump to MPEP Source · 37 CFR 1.55Form Paragraph UsageAccess to Prosecution HistoryForm Paragraphs
Topic

Priority Claim in PCT

1 rules
StatutoryInformativeAlways
[mpep-214-03-e4734a31631dc3e29220cef8]
Use Form Paragraph 2.23 for Priority Claim
Note:
When the earlier foreign application was filed more than 12 months before the U.S. application and priority has not been restored, use form paragraph 2.23.

Where the earlier foreign application was filed more than 12 months prior to the U.S. application and priority has not been restored under PCT Rule 26bis.3 for an international application or upon a granted petition under 37 CFR 1.55(c), use form paragraph 2.23.

Jump to MPEP Source · 37 CFR 1.55(c)Priority Claim in PCTRequest Content and FormPCT Request Form
Topic

Components Required for Filing Date

1 rules
StatutoryRecommendedAlways
[mpep-214-03-42feae95ea48a5a15903f172]
Claim for Priority Based on Complete Specification
Note:
The claim for priority must be based on the complete British specification filed within one year of the U.S. application, not the provisional specification filed more than a year earlier.

For example, where a British provisional specification was filed more than a year before a U.S. application, but the British complete application was filed within the year, and certified copies of both were submitted, language similar to the following should be used: “Receipt is acknowledged of papers filed on September 18, 1979, purporting to comply with the requirements of 35 U.S.C. 119(a) – (d). It is not seen how the claim for priority can be based on the British specification filed January 23, 1978, because the instant application was filed more than one year thereafter. However, the printed heading of the patent will note the claimed priority date based on the complete specification; i.e., November 1, 1978, for such subject matter as was not disclosed in the provisional specification.”

Jump to MPEP SourceComponents Required for Filing DateFiling Date RequirementsPatent Application Content
Topic

Correction of Applicant's Mistake

1 rules
StatutoryPermittedAlways
[mpep-214-03-9fc886adc69f43a92b2ac1eb]
Foreign Priority Claim After Publication Can Be Corrected
Note:
A certificate of correction can be filed to include a foreign priority claim after the patent is published.

When the claim for foreign priority or the certified copy of the foreign application is filed after the date of payment of the issue fee but prior to the date of grant of the patent, the foreign priority claim or certified copy will be placed in the file record but there may be no review of the papers and the patent when published will not include the priority claim. A certificate of correction under 35 U.S.C. 255 and 37 CFR 1.323 can be filed to have the foreign priority claim or certified copy considered after publication of the patent. In addition, for original applications filed under 35 U.S.C. 111(a) or international applications entering the national stage under 35 U.S.C. 371, a grantable petition to accept an unintentionally delayed claim for priority under 37 CFR 1.55 and the petition fee must be filed with the certificate of correction. See MPEP § 216.01.

Jump to MPEP Source · 37 CFR 1.323Correction of Applicant's MistakeNational Stage Entry RequirementsPublication Language

Examiner Form Paragraphs

Examiner form paragraphs are standard language that you might see in an Office Action or communication from the USPTO. Examiners have latitude to change the form paragraphs, but you will often see this exact language.

¶ 2.27 ¶ 2.27 Acknowledge Certified Copy of Foreign Priority Paper in Parent

Acknowledgment is made of applicant’s claim for foreign priority under 35 U.S.C. 119(a) – (d) . The certified copy has been filed in parent Application No. [1] , filed on [2] .

¶ 2.23 ¶ 2.23 Foreign Filing More Than 12 Months Earlier, No Petition to Restore Priority Granted

Acknowledgment is made of applicant's claim for priority under 35 U.S.C. 119(a)-(d) or (f) , 365(a) or (b) , or 386(a) based upon an application filed in [1] on [2] . The claim for priority cannot be based on said application, because the subsequent nonprovisional or international application designating the United States was filed more than twelve months thereafter and no petition under 37 CFR 1.55 or request under PCT Rule 26bis.3 to restore the right of priority has been granted.

Applicant may wish to file a petition under 37 CFR 1.55(c) to restore the right of priority if the subsequent application was filed within two months from the expiration of the twelve-month period and the delay was unintentional. A petition to restore the right of priority must include: (1) the priority claim under 35 U.S.C. 119(a)-(d) or (f) , 365(a) or (b) , or 386(a) in an application data sheet, identifying the foreign application to which priority is claimed, by specifying the application number, country (or intellectual property authority), day, month, and year of its filing (unless previously submitted); (2) the petition fee set forth in 37 CFR 1.17(m) ; and (3) a statement that the delay in filing the subsequent application within the twelve-month period was unintentional. The petition to restore the right of priority must be filed in the subsequent application, or in the earliest nonprovisional application claiming benefit under 35 U.S.C. 120 , 121 , 365(c) , or 386(c) to the subsequent application, if such subsequent application is not a nonprovisional application. The Director may require additional information where there is a question whether the delay was unintentional. The petition should be addressed to: Mail Stop Petition, Commissioner for Patents, P.O. Box 1450, Alexandria, Virginia 22313-1450.

Citations

Primary topicCitation
Amendments in National Stage
Correction of Applicant's Mistake
Design Claim Form
Interviews in National Stage
National Stage Entry Requirements
35 U.S.C. § 111(a)
Components Required for Filing Date35 U.S.C. § 119(a)
Correction of Applicant's Mistake
National Stage Entry Requirements
35 U.S.C. § 255
Amendments in National Stage
Correction of Applicant's Mistake
Interviews in National Stage
National Stage Entry Requirements
35 U.S.C. § 371
Correction of Applicant's Mistake
National Stage Entry Requirements
37 CFR § 1.323
Access to Prosecution History
Correction of Applicant's Mistake
Design Claim Form
Form Paragraph Usage
National Stage Entry Requirements
37 CFR § 1.55
Priority Claim in PCT37 CFR § 1.55(c)
Correction of Applicant's Mistake
National Stage Entry Requirements
MPEP § 216.01
Design Claim FormForm Paragraph § 2.21.01
Priority Claim in PCTForm Paragraph § 2.23
Access to Prosecution History
Form Paragraph Usage
Form Paragraph § 2.26
Priority Claim in PCTPCT Rule 26bis.3

Source Text from USPTO’s MPEP

This is an exact copy of the MPEP from the USPTO. It is here for your reference to see the section in context.

BlueIron Last Updated: 2025-12-31